<template>
  <div class="login">
    <section class="form-container">
      <div class="manage-tip">
        <span class="title">后台资金管理系统</span>
        <el-form :model="loginUser" :rules="rules" ref="loginForm" label-width="60px" class="login-form">
          <el-form-item label="邮箱" prop="email">
            <el-input type="text" v-model="loginUser.email" placeholder="请输入邮箱"></el-input>
          </el-form-item>
          <el-form-item label="密码" prop="password">
            <el-input type="password" v-model="loginUser.password" placeholder="请输入密码"></el-input>
          </el-form-item>
          <el-form-item>
            <el-button type="primary" class="submit-btn" @click="submitForm('loginForm')">登录</el-button>
          </el-form-item>
          <div class="tiparea">
            <p>还没有账号？现在<router-link to='/register'>注册</router-link></p>
          </div>
        </el-form>
      </div>
    </section>
  </div>
</template>

<script>
import jwtDecode from 'jwt-decode';
import axios from 'axios';

export default {
  name: "Login",
  components: {},
  data(){
    return {
      loginUser: {
        emaile: '',
        password:'',
      },
      rules: {
        email: [
          {          
            type: 'email',
            required: true,
            message: '邮箱格式不正确',
            trigger: 'blur'
          }
        ],
        password: [
          {
            required: true,
            message: '密码不能为空',
            trigger: 'blur'
          },
          {
            min: 6, 
            max: 16, 
            message: '长度在6到16个字符之间',
            trigger: 'blur'
          }
        ]
      }
    }
  },
 
  methods: {
    submitForm(formName) {
      this.$refs[formName].validate((valid) => {
        if (valid) {
          this.$axios.post("/api/users/login", this.loginUser)
          .then((res) => {
            const {token} = res.data;
            //存储token
            localStorage.setItem('eleToken', token);

            //解析token
            const decoded = jwtDecode(token);
            //token存储到vuex
            this.$store.dispatch("setAuthenticated", this.isEmpty(decoded));
            this.$store.dispatch("setUser", decoded);

            this.$router.push('/About');
          })
        } else {
          console.log('error submit!!');
          return false;
        }
      });
    },

    isEmpty(value){
      return (
        value === undefined || value === null
        (typeof value === 'object' && Object.keys(value).length === 0) || 
        (typeof value === 'object' && value.trim().length === 0)
      )
    }
  }
};
</script>

<style scoped>
.login {
  /* position: relative; */
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: url(../assets/bg.jpg) no-repeat center center;
  /* background-size: 100% 100%; */
  background-size: cover;
  position: fixed;
}
.form-container {
  width: 370px;
  height: 210px;
  position: absolute;
  top: 10%;
  left: 34%;
  padding: 25px;
  border-radius: 5px;
  text-align: center;
}
.form-container .manage-tip .title {
  font-family: "Microsoft YaHei";
  font-weight: bold;
  font-size: 26px;
  color: #fff;
}
.login-form {
  margin-top: 20px;
  background-color: #fff;
  padding: 20px 40px 20px 20px;
  border-radius: 5px;
  box-shadow: 0px 5px 10px #cccc;
}
.submit-btn {
  width: 100%;
}
.tiparea{
  text-align: center;
  font-size: 12px;
  color: #333;
}
.tiparea p a{
  color: #409eff;
}
</style>

